Submission #162760

#	Time	Username	Problem	Language	Result	Execution time	Memory
162760		abacaba	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	2521 ms	238340 KiB

sortbooks

#include <chrono>
#include <random>
#include <iostream>
#include <string>
#include <unordered_map>
#include <cstring>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include <math.h>
#include <cstdio>
#include <stdio.h>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <deque>
#include <cassert>
#include <stack>
using namespace std;

#define max3(a, b, c) max(a, max(b, c))
#define min3(a, b, c) min(a, min(b, c))
#define mp make_pair
#define f first
#define se second
#define pb push_back
#define ppb pop_back
#define ll long long
#define ull unsigned long long
#define cntbit(x) __builtin_popcount(x)
#define endl '\n'
#define uset unordered_set
#define umap unordered_map
#define pii pair<int, int>
#define ld long double
#define pll pair<long long, long long>

const int mod = 1e9 + 7;
const int inf = 1e9;
const int N = 1e6 + 15;
int n, m, a[N], maxx[N << 2];
vector <int> t[N << 2];

void build(int v, int tl, int tr) {
    if(tl == tr) {
        t[v] = {a[tl]};
        return;
    }
    int mid = tl + tr >> 1, l = v << 1, r = v << 1 | 1;
    build(l, tl, mid);
    build(r, mid + 1, tr);
    maxx[v] = max(maxx[v << 1], maxx[v << 1 | 1]);
    int i = 0, j = 0;
    // for(; i < t[l].size(); ++i) {
    //     if(j && t[l][i] > t[r][j - 1])
    //         maxx[v] = max(maxx[v], t[r][j-1] + t[l][i]);
    //     while(j < t[r].size() && t[r][j] < t[l][i]) {
    //         maxx[v] = max(maxx[v], t[r][j] + t[l][i]);
    //         t[v].pb(t[r][j++]);
    //     }
    //     t[v].pb(t[l][i]);
    // }
    // while(j < t[r].size())
    //     t[v].pb(t[r][j++]);
    merge(t[l].begin(), t[l].end(), t[r].begin(), t[r].end(), back_inserter(t[v]));
    for(int i = 0; i < t[l].size(); ++i) {
        int ind = lower_bound(t[r].begin(), t[r].end(), t[l][i]) - t[r].begin();
        if(ind)
            maxx[v] = max(maxx[v], t[l][i] + t[r][ind - 1]);
    }
}

int get(int v, int tl, int tr, int l, int r) {
    if(tl > r || tr < l)
        return 0;
    if(tl >= l && tr <= r)
        return maxx[v];
    int mid = tl + tr >> 1;
    return max(get(v << 1, tl, mid, l, r), get(v << 1 | 1, mid + 1, tr, l, r));
}

main() {
    scanf("%d%d", &n, &m);
    for(int i = 1; i <= n; ++i)
        scanf("%d", &a[i]);
    build(1, 1, n);
    for(int i = 1; i <= m; ++i) {
        int l, r, k;
        scanf("%d%d%d", &l, &r, &k);
        if(get(1, 1, n, l, r) > k)
            puts("0");
        else
            puts("1");
    }
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'void build(int, int, int)':
sortbooks.cpp:50:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid = tl + tr >> 1, l = v << 1, r = v << 1 | 1;
               ~~~^~~~
sortbooks.cpp:67:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < t[l].size(); ++i) {
                    ~~^~~~~~~~~~~~~
sortbooks.cpp:54:9: warning: unused variable 'i' [-Wunused-variable]
     int i = 0, j = 0;
         ^
sortbooks.cpp:54:16: warning: unused variable 'j' [-Wunused-variable]
     int i = 0, j = 0;
                ^
sortbooks.cpp: In function 'int get(int, int, int, int, int)':
sortbooks.cpp:79:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid = tl + tr >> 1;
               ~~~^~~~
sortbooks.cpp: At global scope:
sortbooks.cpp:83:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:84:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
sortbooks.cpp:86:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
         ~~~~~^~~~~~~~~~~~~
sortbooks.cpp:90:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &l, &r, &k);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23